{"id":"CVE-2021-36089","aliases":["DEBIAN-CVE-2021-36089","EUVD-2021-22722","GHSA-j6x3-x857-7j5x"],"status":"published","title":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress:...","description":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01175,"percentile":0.67789,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2021-07-01T02:50:42Z","modified":"2026-10-23T18:03:49Z","fixes":[{"ecosystem":"Debian:12","package":"libgrokj2k","fixed_in":["9.5.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libgrokj2k","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.5.0-1"}]}]}],"products":[{"vendor":"zope","product":"grok"}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33544","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/grok/OSV-2021-677.yaml","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/GrokImageCompression/grok/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36089"},{"url":"https://github.com/advisories/GHSA-j6x3-x857-7j5x"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-36089","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-36089","description":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).","status":"published","published":"2021-07-01T02:50:42Z","modified":"2024-08-04T00:47:43.828Z","updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2021-22722","description":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).","status":"published","published":"2021-07-01T02:50:42Z","modified":"2024-08-04T00:47:43Z","updated_at":"2026-11-03T03:24:29.877227Z"}],"ghsa":[{"id":"GHSA-j6x3-x857-7j5x","title":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress:...","description":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).","status":"published","published":"2022-05-24T19:06:44Z","modified":"2023-01-30T05:00:35Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:14.069279Z"}],"nvd":[{"id":"CVE-2021-36089","description":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).","status":"published","published":"2021-07-01T03:15:08.883Z","modified":"2026-06-17T03:58:21.307Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"CVE-2021-36089","description":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).","status":"published","published":"2021-07-01T03:15:08.883Z","modified":"2026-03-14T11:01:37.547322Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.434873Z"},{"id":"DEBIAN-CVE-2021-36089","description":"Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).","status":"published","published":"2021-07-01T03:15:08.883Z","modified":"2026-10-23T18:03:49.733309944Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:35.233346Z"}]}}